Init ESDS repository

example/receiver.py

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+#!/usr/bin/env python
+
+import sys, random, time
+
+lr=random.Random(6)
+
+def execute(api):
+    uptime=api.args
+    endoff=0
+    for i in range(0,24):
+        startoff=random.randint(0,3600-uptime)
+        api.turn_off()
+        api.wait(startoff+endoff)
+        api.turn_on()
+        wakeat=api.read("clock")
+        wakeuntil=wakeat+uptime
+        # Receive until uptime seconds if elapsed
+        while api.read("clock") < wakeuntil:
+            code, data=api.receivet("wlan0",wakeuntil-api.read("clock"))
+            if code == 0:
+                api.log("Receive "+data)
+        api.log("Was up for {}s".format(api.read("clock")-wakeat))
+        endoff=3600*(i+1)-api.read("clock")
+    api.turn_off()
+    api.wait(endoff)
+    api.turn_on()
+
+

example/sender.py

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+#!/usr/bin/env python
+
+######################
+#     _    ____ ___  #
+#    / \  |  _ \_ _| #
+#   / _ \ | |_) | |  #
+#  / ___ \|  __/| |  #
+# /_/   \_\_|  |___| #
+#                    #
+######################
+# api.args                                       # Contains node arguments
+# api.send(interface, data,size, dst)            # If interface is "wlan0" dst is not used
+# api.sendt(interface, data,size, dst,timeout)   # Similar to api.send() but with timeout
+# api.receive(interface)                         # Receive the data by returning the following tuple (code,data) if code is 0 receive succeed
+# api.receivet(interface,timeout)                # Similar to api.receive() but with timeout
+# api.read(register)                             # Read from the simulator registers (ex: clock)
+# api.log(msg)                                   # Print log in the simulation console
+# api.wait(duration)                             # Wait for "duration" seconds of simulated time
+# api.turn_off(duration)                         # Turn the node off for "duration" seconds (no data can be receive during this time period)
+
+import sys, random
+
+# Note that the following is required to have different instance from thread to thread
+lr=random.Random(6)
+
+def execute(api):
+    uptime=api.args
+    endoff=0
+    for i in range(0,24):
+        startoff=random.randint(0,3600-uptime)
+        api.turn_off()
+        api.wait(startoff+endoff)
+        api.turn_on()
+        wakeat=api.read("clock")
+        wakeuntil=wakeat+uptime
+        # Send until uptime seconds if elapsed
+        while api.read("clock") < wakeuntil:
+            api.sendt("wlan0","hello",10,None, wakeuntil-api.read("clock"))
+        api.log("Was up for {}s".format(api.read("clock")-wakeat))
+        endoff=3600*(i+1)-api.read("clock")
+    api.turn_off()
+    api.wait(endoff)
+    api.turn_on()
+        
+
+
+

example/simulator.py

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+#!/usr/bin/env python
+
+# Load ESDS
+import sys
+sys.path.append("../")
+import esds
+
+# Use numpy to construct bandwidth and latencies matrix
+import numpy as np
+
+##### Scenario
+# The simulated scenario comprises 1 that wakes up randomly
+# for a duration called "uptime" every hour. The sender try to transmit
+# his data during that uptime. Other nodes are receivers that have similar
+# random wake up parterns and strive to receive data from the sender.
+
+##### Bandwidth matrix
+# Bandwidth value can be 0 for unreachable nodes
+# Diagonal entries impact the transmission duration for wireless transmissions (wlan0)
+n=2 # Number of nodes including the sender
+B=np.full((n,n),5) # 5Mbps
+
+##### Latency matrix
+# If the latency entries match one with a bandwidth of 0
+# then it will be ignore since node is unreachable.
+L=np.full((n,n),0) # 0s
+
+##### Create the simulator
+s=esds.Simulator(B,L)
+
+##### Instantiate nodes
+uptime=180 # 180s uptime
+s.create_node("sender",args=uptime) # Load sender.py for the first node with 5 as argument (first row in B and L)
+
+# Aguments can be passed to nodes via: s.create_node("sender",args="my argument")
+for n in range(0,n-1): # Load receiver.py for the remaining nodes
+    s.create_node("receiver",args=uptime)
+
+##### Run the simulation
+#s.run(debug=True) # Generate a "esds.debug" file
+s.run()